Comment in #define's

[Dolf Grunbauer]

I've just had a (lint) problem. Somehow lint kept complaining about not
using a return value. It turned out that this was due to a comment in a
#define which was removed. I thought this was wrong, but now I am not so
sure anymore. The code looked like:

#define ERROR(x,v)      if (x) {/*RVALUSED*/ send_answer(v); return}

void
somefunc(a,c) {
    ERROR(a == 0, 1);                                 /* 1 */
    if (c) {/*RVALUSED*/ send_answer(2); return}      /* 2 */
    ...
}

Statement 1 gave the error, while 2 was accepted without warnings. Now I am
wondering what should happen when the source file is run through only through
the preprocessor while the comments should stay in (flags: -E -Wp,-C): is
the comment in the #define supposed to be removed or not ? What does ANSI-C
say about this ?

BTW I solved the problem by using '(void)' in the define, so I don't need
    any solutions to fix this particular problem :-)
-- 
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  / U |  Dolf Grunbauer  Tel: +31 55 433233 Internet dolf at idca.tds.philips.nl
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